Massage chair frame

Abstract

The invention relates to a massage chair frame which comprises a backrest frame, a cushion frame, a bottom frame, a track, an electric push rod and a leg and foot frame hinged to the front end of the cushion frame. The rail stretches across and is fixed between the backrest frame and the cushion frame, the cushion frame is arranged above the bottom frame, and the backrest frame and the cushion frame can move back and forth relative to the bottom frame under the driving of the electric push rod and complete the continuous change between a sitting posture and a lying posture; wherein the leg frame is divided into a left leg frame and a right leg frame, and the left leg frame and the right leg frame are respectively hung at the front end of the cushion frame through coaxial shaft sections and are driven by respective power mechanisms to lift and swing. The left leg part and the right leg part are separated and can be driven by the power mechanism to synchronously ascend and descend and asynchronously and alternately swing, the requirements of different personalized massage trainings are met, and the functions of the massage chair are enriched.

Description

Technical fields:

[0001] This invention belongs to the field of massage chair technology, and specifically relates to a massage chair frame, particularly a leg support that can be separated to the left and right and swing independently. Background technology:

[0002] Current massage chairs all feature forward and backward movement and continuous changes between sitting and reclining positions, but the adjustment movements are relatively limited. A massage chair is a complete, functional unit formed by installing various massage components on a massage chair frame, along with soft padding and a cover. The massage chair frame generally includes: a backrest frame, a seat cushion frame, a base frame, tracks, and electric push rods, as well as a leg support frame hinged to the front of the seat cushion frame. The tracks come in two types: integrated L-shaped tracks and segmented tracks. Both tracks span the backrest frame and seat cushion frame and are fixed to them. Driven by the electric push rods, the backrest frame, seat cushion frame, and leg support frame can move forward and backward relative to the base frame, allowing for continuous changes between sitting and reclining positions. The leg support frame also moves synchronously, gradually rising to be level with the seat cushion frame when shifting to a reclining position. However, currently, the leg support frames are all integrated, meaning the legs can only rise or fall synchronously, failing to meet the personalized needs of asynchronous left and right leg movements.

[0003] The subject of this invention is how to provide a more personalized massage solution. Summary of the Invention:

[0004] The purpose of this invention is to design a massage chair frame with legs that are set separately on the left and right sides and can independently complete the lifting and swinging.

[0005] The technical solution of this invention is implemented as follows: A massage chair frame, comprising: a backrest frame, a seat cushion frame, a base frame, a track and an electric push rod, and a leg support hinged to the front end of the seat cushion frame; the track spans and is fixed between the backrest frame and the seat cushion frame, the seat cushion frame is positioned above the base frame, and under the drive of the electric push rod, the backrest frame and the seat cushion frame can move back and forth relative to the base frame, completing continuous changes between sitting and lying positions; the leg support is characterized in that: the leg support is divided into a left leg support and a right leg support, the left leg support and the right leg support are respectively suspended from the front end of the seat cushion frame through coaxial shaft segments, and are driven by their respective power mechanisms to lift and swing.

[0006] The power mechanism has the following three structures: 1. An electric push rod, one end of which is hinged to the seat frame and the other end to a swing arm. The upper end of the swing arm is hinged to the front end of the seat frame, and the lower end is hinged to a roller, which abuts against the back of the leg frame; 2. A mechanism including a motor, a gearbox, and gears. The gears are locked to the output shaft of the gearbox. A rack meshes with the gears and is maintained by a retainer movably positioned on the output shaft. One end of the rack is hinged to a swing arm. The upper end of the swing arm is hinged to the front end of the seat frame, and the lower end is hinged to a roller, which abuts against the back of the leg frame; 3. A mechanism including a motor, a gearbox, and gears. The gears are locked to the output shaft of the gearbox. Sector teeth centered on the shaft segment are fixed on the left and right leg frames, and these sector teeth mesh with the gears.

[0007] The cage is a box body consisting of a bottom and a cover secured by screws. Both are provided with corresponding shaft holes, which allow it to be rotatably mounted on the output shaft and swing freely relative to the output shaft. The bottom of the box has a slot in the direction perpendicular to the shaft hole, through which the rack passes and can mesh with the gear inside the cage.

[0008] The retainer consists of two clamping plates and a guide shaft disposed between the clamping plates. The two clamping plates are provided with corresponding shaft holes, and can be rotatably sleeved on the output shafts on both sides of the gear through the shaft holes. The guide shaft abuts against the surface of the rack away from the teeth.

[0009] The rack has a long groove in the middle, and one or two guide shafts between the two clamping plates pass through the long groove to maintain the meshing state of the rack and the gear.

[0010] The backrest frame and seat cushion frame are fixed to the backrest section and seat cushion section of the L-shaped track respectively. A crossbeam is connected between the backrest section and seat cushion section or between the backrest frame and seat cushion frame. Three coaxial hinge seats are provided on the crossbeam at the front end of the seat cushion frame, one on each side and one in the middle, for suspending the left leg support and the right leg support respectively. The upper ends of the side frame rods of the left leg support and the right leg support are respectively provided with axle sections facing outward. The axle sections rest on the hinge seats and are rotatably positioned by the flip-tops configured on the hinge seats.

[0011] The inner end of the flip cover can be rotatably positioned by a horizontal bolt shaft or rivet shaft, and the outer end is locked to the hinge seat by a vertical bolt. After the flip cover is flipped open, the legs can be directly suspended on the hinge seat.

[0012] This invention features separate left and right legs and feet, which can be raised and lowered synchronously or oscillated asynchronously under the drive of a power mechanism, meeting the needs of different personalized massage training and enriching the functions of the massage chair. Attached image description:

[0013] The invention will be further described below with reference to specific figures:

[0014] Figure 1 A side view of the massage chair frame

[0015] Figure 2 A schematic diagram of a massage chair frame.

[0016] Figure 3 Exploded view of a massage chair frame

[0017] Figure 4 This is a side view diagram of the massage chair frame.

[0018] Figure 5 Schematic diagram of massage chair frame 2

[0019] Figure 6 Schematic diagram of massage chair frame 3

[0020] Figure 7 A three-sided view diagram of the massage chair frame

[0021] Figure 8 Exploded view of rack and pinion power mechanism

[0022] Figure 9 A schematic diagram of rack and pinion meshing.

[0023] Figure 10 for Figure 9 Exploded view diagram

[0024] Figure 11 Schematic diagram of rack and pinion meshing

[0025] in

[0026] 1—Backrest frame;

[0027] 2—Seat cushion frame;

[0028] 3—Base frame;

[0029] 4—railway; 41—backrest section; 42—seat cushion section;

[0030] 5—Electric linear actuator;

[0031] 6—Legged frame; 61—Left leg; 62—Right leg; 63—Axle section; 64—Frame rod;

[0032] 7—Power mechanism; 71—Motor; 72—Gearbox; 721—Output shaft; 73—Gear; 74—Rack;

[0033] 741—Long slot; 75—Cage; 751—Box bottom; 752—Box cover; 753—Shaft hole; 754—Slot hole;

[0034] 755—Clamping plate; 756—Guide shaft; 76—Sector tooth;

[0035] 8—Operating arm; 81—Roller;

[0036] 9—Crossbeam; 91—Hinge seat; 92—Flip cover; 93—Bolt shaft; 94—Bolt; Detailed implementation method:

[0037] Reference Figures 1 to 3 The massage chair frame includes: a backrest frame 1, a seat cushion frame 2, a base frame 3, a track 4, and an electric push rod 5, as well as a leg support 6 hinged to the front end of the seat cushion frame; the track 4 spans and is fixed between the backrest frame 1 and the seat cushion frame 2, the seat cushion frame 2 is positioned above the base frame 3, and under the drive of the electric push rod 5, the backrest frame 1 and the seat cushion frame 2 can move back and forth relative to the base frame 3, and complete the continuous change between sitting and reclining positions, which is also a conventional function of existing massage chairs.

[0038] The leg support 6 is divided into a left leg support 61 and a right leg support 62. The left leg support 61 and the right leg support 62 are respectively suspended from the front end of the seat cushion frame 2 through coaxial shaft segments 63, and are driven to lift and swing by their respective power mechanisms 7. The power mechanisms have the following three structures:

[0039] I. Reference Figures 1 to 3 and Figure 8 The system includes a motor 71, a gearbox 72, and a gear 73. The gear 73 is locked onto the output shaft 721 of the gearbox. A rack 74 meshes with the gear 73 and is held in engagement by a retainer 75 movably positioned on the output shaft 721. One end of the rack 74 is hinged to a rocker arm 8. The upper end of the rocker arm 8 is hinged to the front end of the seat cushion 2, and the lower end is hinged to a roller 81, which abuts against the back of the leg support 6. The two power mechanisms 7 are each driven to raise or lower by the rocker arm 8 located on the back of the left leg support 61 and the right leg support 62, respectively. The motor 71 in the power mechanism 7 drives the gear 73 to rotate, which in turn drives the rocker arm 8 to swing through the meshing rack 74. The roller 81 at the lower end of the rocker arm supports the back of the leg support, thus achieving the raising or lowering operation. Since the rack 74 is hinged to the rocker arm 8, the direction of the rack 74 changes as the leg frame 6 swings. To ensure reliable engagement with the gear 73, a retainer 75 that can rotate with it is provided. The retainer 75 has the following two specific structures:

[0040] The first structure, refer to Figure 8 The retainer 75 is a box body consisting of a box bottom 751 and a box cover 752 secured by screws. Both are provided with corresponding shaft holes 753, which allow it to be rotatably mounted on the output shaft 721. The box bottom 751 has a slot 754 in the direction perpendicular to the axis of the shaft hole 753. The rack 74 passes through the slot 754 and can mesh with the gear 73 located in the retainer 751. The retainer 75 can swing freely relative to the output shaft 721 following the rack 74, while maintaining the meshing of the rack 74 with the gear 73.

[0041] The second structure, such as Figure 9 and Figure 10 The retainer 75 consists of two clamping plates 755 and two guide shafts 756 disposed between the clamping plates. Corresponding shaft holes 753 are provided on the two clamping plates 755, allowing them to rotatably mount on the output shafts 721 on both sides of the gear 73 via the shaft holes 753. The two guide shafts 756 abut against the surface of the rack 74 away from the teeth. That is, the shaft holes 753 and the two guide shafts 756 form an isosceles triangle structure. To reduce resistance and improve durability, self-lubricating copper sleeves can be fitted onto the guide shafts 756.

[0042] Or such as Figure 11 The rack 74 has a long groove 741 in the middle. The retainer 75 consists of two clamping plates 755 and a guide shaft 756 disposed between the clamping plates. The two clamping plates 755 have corresponding shaft holes 753, which allow it to be rotatably mounted on the output shafts 721 on both sides of the gear 73. The guide shaft 756 passes through the long groove 741 in the middle of the rack, maintaining the meshing state of the rack 74 and the gear 73 without hindering the change of the rack 74 angle. It can also be used with... Figure 9 and Figure 10 Similarly, two guide shafts are used to ensure stable operation.

[0043] II. Reference Figure 4 and Figure 5 The system includes a motor 71, a gearbox 72, and a gear 73. The gear 73 is locked onto the output shaft 721 of the gearbox. Sector teeth 76 centered on the shaft segment 63 are fixed to the left leg support 61 and the right leg support 62, respectively, and these sector teeth 76 mesh with the gear 73. The motor 71 drives the gear 73 to rotate, and through the meshing sector teeth 76, it raises or lowers the left and right leg supports.

[0044] III. Reference Figure 6 and Figure 7 The electric push rod 5 is hinged at one end to the seat cushion frame 2 and at the other end to a swing rod 8. The upper end of the swing rod 8 is hinged to the front end of the seat cushion frame 2 and the lower end is hinged to a roller 81. The roller 81 abuts against the back of the leg frame 1; similar to the principle in Example 1.

[0045] Furthermore, the backrest frame 1 and the seat cushion frame 2 are fixed on the backrest section 41 and the seat cushion section 42 of the L-shaped track respectively. A crossbeam 9 is connected between the backrest section 41 and the seat cushion section 42 or between the backrest frame 1 and the seat cushion frame 2. Three coaxial hinge seats 91 are provided on the crossbeam 9 at the front end of the seat cushion frame 2, one on each side and one in the middle, for suspending the left leg support 61 and the right leg support 62 respectively. The upper ends of the side frame rods 64 of the left leg support 61 and the right leg support 62 are respectively provided with shaft sections 63 facing outward. The shaft sections 63 rest on the hinge seats 91 and are rotatably positioned by the flip cover 92 configured on the hinge seats 91. More specifically, the inner end of the flip cover 92 can be rotatably positioned by a horizontal bolt shaft 93 or a rivet shaft, and the outer end is locked to the hinge seat 91 by a vertical bolt 94; after the flip cover 92 is flipped open, the leg bracket 6 can be directly suspended on the hinge seat 91, and the horizontally arranged bolt shaft 93 can withstand a greater reaction force.

Claims

1. A massage chair frame, the massage chair frame comprising: The backrest frame (1), seat cushion frame (2), base frame (3), track (4) and electric push rod (5), and leg support (6) hinged to the front end of seat cushion frame (2); the track (4) spans and is fixed between the backrest frame (1) and seat cushion frame (2), the seat cushion frame (2) is set above the base frame (3), and under the drive of electric push rod (5), the backrest frame (1) and seat cushion frame (2) can move back and forth relative to the base frame (3) and complete the continuous change between sitting and lying posture; the characteristic is that the leg support (6) is divided into left leg support (61) and right leg support (62), the left leg support (61) and right leg support (62) are respectively suspended at the front end of seat cushion frame (2) through coaxial shaft segment (63), and are driven to lift and swing by their respective power mechanism (7).

2. A massage chair frame according to claim 1, characterized in that: The power mechanism (7) has the following three structures: First, an electric push rod (5), one end of which is hinged to the seat frame (2) and the other end is hinged to a swing rod (8). The upper end of the swing rod (8) is hinged to the front end of the seat frame (2) and the lower end is hinged to a roller (81). The roller (81) abuts against the back of the leg frame (6); Second, a mechanism including a motor (71), a gearbox (72) and a gear (73). The gear (73) is locked on the output shaft (721) of the gearbox (72). A rack (74) meshes with the gear (73) and is held in place by a retainer that is movably positioned on the output shaft (721). The frame (75) is kept engaged. One end of the rack (74) is hinged to a rocker arm (8). The upper end of the rocker arm (8) is hinged to the front end of the seat frame (2), and the lower end is hinged to a roller (81). The roller (81) abuts against the back of the leg frame (6). The third part includes a motor (71), a gearbox (72), and a gear (73). The gear (73) is locked on the output shaft (721) of the gearbox (72). The left leg frame (61) and the right leg frame (62) are respectively fixed with a sector tooth (76) centered on the shaft segment (63). The sector tooth (76) meshes with the gear (73).

3. A massage chair frame according to claim 2, characterized in that: The retainer (75) is a box body consisting of a box bottom (751) and a box cover (752) secured by screws. Both are provided with corresponding shaft holes (753). It can be rotatably sleeved on the output shaft (721) through the shaft holes (753) and can swing freely relative to the output shaft (721). The box bottom (751) has a slot (754) in the direction perpendicular to the shaft hole (753). The rack (74) passes through the slot (754) and can mesh with the gear (73) inside the retainer (75).

4. A massage chair frame according to claim 2, characterized in that: The retainer (75) consists of two clamping plates (755) and a guide shaft (756) disposed between the clamping plates (755). The two clamping plates (755) are provided with corresponding shaft holes (753). The retainer is rotatably mounted on the output shafts (721) on both sides of the gear (73) through the shaft holes (753). The guide shaft (756) abuts against the surface of the rack (74) away from the teeth.

5. A massage chair frame according to claim 2 or 4, characterized in that: A long groove (741) is provided in the middle of the rack (74), and one or two guide shafts (756) between the two clamping plates pass through the long groove (741) to maintain the meshing state between the rack (74) and the gear (73).

6. A massage chair frame according to claim 1, characterized in that: The backrest frame (1) and the seat cushion frame (2) are fixed on the backrest section (41) and the seat cushion section (42) of the L-shaped track (4). A crossbeam (9) is connected between the backrest section (41) and the seat cushion section (42) or between the backrest frame (1) and the seat cushion frame (2). Three coaxial hinge seats (91) are provided on the crossbeam (9) at the front end of the seat cushion frame (2), one on each side and one in the middle, which are used to suspend the left leg support (61) and the right leg support (62) respectively. The upper ends of the side frame rods (64) of the left leg support (61) and the right leg support (62) are respectively provided with shaft sections (63) facing outward. The shaft sections (63) are placed on the hinge seats (91) and are rotatably positioned by the flip cover (92) configured on the hinge seats (91).

7. A massage chair frame according to claim 6, characterized in that: The inner end of the flip cover (92) can be rotated and positioned by a horizontal bolt shaft (93) or a rivet shaft, and the outer end is locked to the hinge seat (91) by a vertical bolt (94). After the flip cover (92) is flipped open, the leg frame (6) can be directly suspended on the hinge seat (91).

Images